Improvement in rossing-maoeffles



' @nitrtta-tes @nicht @ffice CHARLES GILPIN AND LAURENCE T. DICKINSON, Oli" CUMBERLAND,

MARYLAND.

- Laim Param No. 82,399, ma september 22, 186s.

IMPROVEMENT IN ROSSING-MAGHINES.

'.I'O VALL WHOM I'I- MAY CONCERN:

Be it knownthat we, CHARLES GILPIN and LAURENCE T. DICKINsoN, of Cumberland, iii the county of Alleghany, and State of Maryland, have invented a new and improved Hessing-Machine; and we do hereby ldeclare that the following is a full, clear, and exact description of the construction and operation of the same,

reference being had to the accompanying drawings, making a part of this specification, in which- Figure I is a section through line :c :1: oilg. 2. A

Figure 2 isla nside view.

The object'of -this invention is to construct a simple and effective machine, which shall ross the bark more thoroughly than has heretofore been done.

In the drawings,A is theframe of the machine, and B Bl B2 B3 are four strong cylindric rollers, arranged as shown in the drawings, e'ach of them being provided with rows of stro-ng teeth,: e c.

The lower rollers, B2 B3, run in fixed bearings, the upper ones, B Bl, in vertically-sliding bearings, regulated in height by set-screws s s, and having springs, of rubber or other suitable material, between thc screw and the journal-box, so as Ato allow the rollers to yield slightly for the passage of very thick bark, or of any ais an idle-roller, extending from end toend of the frame, between the upper edges of the two lower rollers, and performing two functions, one to 'strengthen the machine, and the other to facilitate the passage ofthe bark between the rollers, by preventing it from falling between them. A similar' roller may be provided to operate between the lower edges of the two upper rollers, if thoughtbest. Y

' Motion is imparted to the rollers in such a manner that they shall all move with uniform velocity, the

under ones with the sun, the upper ones against the sun.

The gearing and belting that accomplish this effect are shown in dotted lines, iig. 1and partially shown infig. 2. In g. 1, the working-shaft is seen at b2, and bears a pinion, seen in outline around it. This pinion gears with an idle-wheel, E, which in turn gears with a pinion on the shaft b3 of the roller B3.

The lhree gear-wheels being of equal size, the two lower rollers are caused to rotate in the same direction with equal velocity.

To carry the upper rollers, a belt-pulley, C, is alxed to the outer end of theidlefwheel shaft, and by a `belt, c, running to a pulley, D, rotates thc shaft of roller 1?1 in the samedirection, and with the same velocity,

as the idle-wheel, that is, in an opposite direction to the motion of the lower rollers.

By means of a belt, G, running from a small belt-pulley between the pulley D and the frame, to a beltpulley on the end of the shaft of roller B, of equal size, the motion ofroller Bl is communicated to roller B, thus giving all four of the rollers the proper motion, and a uniform and equal velocity. i

To keep the belts at the proper tension, a. small wheel, z', may be employed, it being supported at the end of a. curved springstandard,-J, which presses it against the belting.

The bark, ross-side'up, is fed through between the two upper and the two lower rollers, from a table, T.

K is a sharp cutting-blade, extending across on the rear side ofthe machine between the rear edges of the upper and lower rollers, and vpresenting a. sharp edge to the barkas it cornes out from between'therollers, which cuts through the bark, splitting the ross-side olf, so as to leave from one-eighth to one-half an inch of the flesh side. v

The ross-side passes out above the knife K, and may be carried away to any part ofthe building by inclined spouts, or an endless-apron carrier, While thelesh side ofthe b ark drops through a spout, and falls d own' an incline, F, by which, or by an endless apron, it may be carried to the bark-mill, lor to any place where it is to be stored.

The whole machine has been thoroughly testedby practical use, andV is found to work'admirably. It .hot only does the work much faster and at less expense than has been accomplished heretofore, but, by .means of the knife K, it strips from' the bark and throws array a large amount of dead, dry, woody substance on the outer side, which is of no use in tanning, and only absorbs a large quantity of the tannin from the live bark I in the vat.

The product itself` is, a new one, consisting of the ieshy part of the bark, entirely denuded ofthe outer hard crust, in strips of any width and length.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is 'L The combination and arrangement, with a cutting-device, of the rollers, B Bl B2 B3, provided with the teeth e e e, and operated by belting and gearing in such a manner that they all have an equa-l and uniform motion, the two upper ones rotating in one and the same direction, and the two lower ones in the opposite direction, substantially in the manner and for the purpose specied.

2. The arrangement of the knife K with reference to the rollers Bl B3, substantially as and for the purpose setforth. f

3. The arrangement of theidle-roller a, in combination with the rollers, substantially as described.

GH'ARLES GILPIN, e LAURENCE T. DIGKINSON.

Witnesses:

JOHN C. BRADY,

JOHN B. HUDsoN. 

